APA aipamena

Engels, F. (1972). The part played by Labour in the transition from ape to man. Moscow: Progress.

Chicago Style aipamena

Engels, Friedrich. The Part Played by Labour in the Transition from Ape to Man. Moscow: Progress, 1972.

MLA aipamena

Engels, Friedrich. The Part Played by Labour in the Transition from Ape to Man. Moscow: Progress, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.